take them down using teamwork. that's what makes them amazing. martha: they were almost extinct. they were killed, exterminated right. >> in 1927 due to livestock conflict. martha: they were eating too much livestock was the conflict. >> they were, all the prey species had gone away and they were looking to survive. even today there is a lot of conflict with the cattle ranchers in yellow stone. we have to respect that too. this is a coexistence. part of sharing the earth eris taking care of these guys, but also the people that live around there. in order to be living together peacefully we have to compromise. martha: you know, what made her go for your arm there? did you have something in there that she wanted to eat? >> in the show that was actually a trained wolf that was trained to strike like that. i like to put things in perspective. i thought i'd give it a shot. and even her she is very strong. the wolf bit my arm, tugged on it like they would tug on an elk to bring it down. it was amazing, it almost knocked